This page lists 17 ignition parts for the 2018 Alfa Romeo 4C, across 5 part types, covering the 1.7L L4 Turbocharged engine. Every part shows its brand, manufacturer part number and fitment notes.
On the 2018 Alfa Romeo 4C, the ignition system delivers spark at the right moment — plugs, coils, wires, distributors and ignition modules. Most of the listed parts are Ignition Coil (6 parts), Camshaft Position Sensor (4 parts) and Crankshaft Position Sensor (4 parts). The other 2 part types cover the remaining 3 parts.
Every part on this page is matched to the 1.7L L4 Turbocharged — the only engine offered in the 2018 Alfa Romeo 4C.
The most listed brands for 2018 Alfa Romeo 4C ignition parts are MOPAR (5 parts), WELLS (3 parts) and WALKER PRODUCTS (2 parts), plus 5 more brands. Quality grades include Standard Replacement, Economy and Premium.
2 parts on this 2018 Alfa Romeo 4C page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including DELPHI GN10790 (Ignition Coil) and BOSCH 0221504026 (Ignition Coil). Click any part number to see every vehicle that part fits.
Camshaft Position Sensor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MARELLI | SAC093 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| MOPAR | 68189833AA | 🇺🇸 US 🇨🇦 CA | Fits 2 door Convertible6 Speed Auto/MAN Twin Clutch Trans | View on Amazon |
| WALKER PRODUCTS | 2352264 | 🇺🇸 US 🇨🇦 CA | Sensor Only | View on Amazon |
| WELLS | 5S16973 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the sensors that report camshaft position to the ECU. Typical signs include a stall, a no-start, or a code for cam or crank correlation. Check the connector and the reluctor gap before replacing the sensor.
4 Camshaft Position Sensor parts are listed for the 2018 Alfa Romeo 4C, from MARELLI, MOPAR, WALKER PRODUCTS and 1 other brand.
Listed part numbers: MARELLI SAC093, MOPAR 68189833AA and WALKER PRODUCTS 2352264, plus the other parts above.
Crankshaft Position Sensor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR | 68237477AA | 🇺🇸 US 🇨🇦 CA | Fits 2 door Convertible6 Speed Auto/MAN Twin Clutch Trans | View on Amazon |
| STANDARD MOTOR PRODUCTS | PC1250 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WALKER PRODUCTS | 2351905 | 🇺🇸 US 🇨🇦 CA | Sensor Only | View on Amazon |
| WELLS | 5S16971 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the sensors that report crankshaft position and engine speed. Typical signs include a stall, a no-start, or a code for cam or crank correlation. Check the connector and the reluctor gap before replacing the sensor.
4 Crankshaft Position Sensor parts are listed for the 2018 Alfa Romeo 4C, from MOPAR, STANDARD MOTOR PRODUCTS, WALKER PRODUCTS and 1 other brand.
Listed part numbers: MOPAR 68237477AA, STANDARD MOTOR PRODUCTS PC1250 and WALKER PRODUCTS 2351905, plus the other parts above.
Ignition Coil
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRENCO | 368285 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DELPHI Popular | GN10790 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BOSCH Popular | 0221504026 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| MOPAR | 68308653AA | 🇺🇸 US 🇨🇦 CA | Fits 2 door Convertible6 Speed Auto/MAN Twin Clutch Trans | View on Amazon |
| STANDARD MOTOR PRODUCTS | UF888 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WELLS | 5C2115 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the coils that fire each spark plug. Typical signs include a misfire that follows one cylinder, a snap in damp weather, or a coil that is swollen or cracked. Swap a suspect coil with a neighbor to confirm, then replace boots that tore on the way off.
6 Ignition Coil parts are listed for the 2018 Alfa Romeo 4C, from PRENCO, DELPHI, BOSCH and 3 other brands. DELPHI GN10790 carries the "Popular" badge.
In the Economy grade, PRENCO supplies 1 part: the catalog's value-priced group. A representative part number is PRENCO 368285.
The Premium section lists 1 option from DELPHI — a step above OE specification in materials, tolerances or warranty terms. DELPHI GN10790 is listed in this group.
The Standard Replacement section lists 4 options from BOSCH, MOPAR, STANDARD MOTOR PRODUCTS and 1 other brand — built to original-equipment specification. BOSCH 0221504026 is listed in this group.
This group includes DELPHI GN10790, PRENCO 368285 and BOSCH 0221504026 and the remaining parts above.
Ignition Lock Housing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR | 68197999AA | 🇺🇸 US 🇨🇦 CA | Fits 2 door Convertible6 Speed Auto/MAN Twin Clutch Trans | View on Amazon |
This table covers the Ignition Lock housings.
This group shows a single part: MOPAR 68197999AA.
Spark Plug
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BOSCH | 96318 | 🇺🇸 US 🇨🇦 CA | OE Fine Wire Double IridiumPre-Set Gap: 0.023" | View on Amazon |
| MOPAR | 68122874AA | 🇺🇸 US 🇨🇦 CA | Fits 2 door Convertible6 Speed Auto/MAN Twin Clutch Trans | View on Amazon |
This table covers the spark plugs for this engine. Typical signs include misfire under load, rough idle, or a flashing check-engine light. Verify the gap even on pre-gapped plugs, and replace coil boots that come off a high-mileage engine.
2 Spark Plug parts for the 2018 Alfa Romeo 4C come from 2 brands — BOSCH and MOPAR.
Part numbers include BOSCH 96318 and MOPAR 68122874AA.
Buying Ignition Parts for a 2018 Alfa Romeo 4C
On this vehicle, the ignition system delivers spark at the right moment — plugs, coils, wires, distributors and ignition modules.
- Confirm you have the 1.7L L4 Turbocharged engine — every part on this page is matched to it.
- Read the notes on each row for position, trim and spec qualifiers before you order.
- Where labor overlaps, replace plugs and wires (or coil boots) as a set — one weak cylinder makes the whole set feel bad.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Ignition Coil and Camshaft Position Sensor .
Frequently Asked Questions
How many ignition parts fit the 2018 Alfa Romeo 4C?
Our catalog currently lists 17 ignition parts for the 2018 Alfa Romeo 4C across 5 subcategories and 8 brands, covering the 1.7L L4 Turbocharged engine. Each part is matched to the engine(s) it fits.
What are the signs of ignition problems on a 2018 Alfa Romeo 4C?
Common symptoms include misfires under load, rough idle, flashing check-engine light, or poor starting in damp weather. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.
What spark-plug gap is listed for the 2018 Alfa Romeo 4C?
Notes on this page include a 0.023" pre-set gap. Still verify against spec — even “pre-gapped” plugs should be checked before they go in.
What should I replace at the same time?
Where labor overlaps, replace plugs and wires (or coil boots) as a set — one weak cylinder makes the whole set feel bad.
What do the market flags (US, CA, MX) on each part mean?
They show the market for which the manufacturer published application data for that part — where the vehicle was first sold, not where the part was made. If your 2018 Alfa Romeo 4C was originally sold in the US, the safest choice is a part marked for the US market.
How do I make sure a part fits my 2018 Alfa Romeo 4C?
Every part on this page is matched to the 1.7L L4 Turbocharged engine. Then gap matters even on “pre-gapped” plugs — verify against spec, and replace coil boots when they come off a high-mileage engine. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2018 Alfa Romeo 4C
Ignition Parts for Other Alfa Romeo 4C Years
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Manufacturer names, model designations and part numbers are used for identification and fitment reference only. AutoFactsDB is an independent catalog and is not affiliated with, endorsed by, or sponsored by any vehicle manufacturer displayed on this page.